.jumbotron { margin-top: -20px ;margin-bottom: 0px ;}
.jumbotron p{line-height:150%}
.jumbotron h1{line-height:180%;margin-top:0px;}
body{ background:url(../picture/bc.jpg) repeat}
.navbar-nav > li > a, .navbar-brand {
   padding-top: 23px; padding-bottom: 0px;
    font-size:140%;
    height: 70px;}
.btn {border:1px solid black;}
.foot { margin-top: -20px ;margin-bottom: 0px ;background:	#87CEFA;}
.head{
	background-image:url(../picture/background/head.jpg) ;
	background-repeat:no-repeat;height:180px
}